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A department store, on average, has daily sales of $29,876.76. The standard deviation of sales is $1000.00. On Tuesday, the store sold $34,893.71 worth of goods. Find Tuesday's z-score.
Using part(a), explain to investor differences between distribution of performance figures for the 2 kinds of stock funds.
Identify and justify which type of sampling (random, stratified, systematic, cluster, convenience) is used in the following examples.
The probability is 90% that the sample percentage will be contained within what symmetrical limits of the population percentage?
Mean=63.6 Standard deviation=2.5 If 36 data points are arbitrarily chosen, determine the probability that mean is less than 64.
A random sample of 72 statistics students was taken to estimate the proportion of students who are also in the Math Club. The 90% confidence interval was 0.438 to 0.642. Using this information, what sample size would be necessary to estimate the t..
A financial planner wants to compare the yield of income and growth mutual funds. Fifty thousand dollars is invested in each of a sample of 35 income and 40 growth funds
At the 5 percent level of significance, can we conclude that the mean weight is greater than 16 ounces? Determine the p-value.
If we select a crew member at random, what is the probability the crew member earns:
Describe your answer to a person who has never had a course in statistics.
The following payoff matrix has been developed for the decision problem. What is the opportunity loss when "A" is Investment alternative and "Decline" is state of nature?
For value 10,40,20,50 and 40, value of arithmetic mean is? Simplest measure of dispersion is the Standard deviation, variance, Quartile deviation.
What is the role of probability concepts in business decision making? Define probability concepts.
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